CVE-2023-53250 (GCVE-0-2023-53250)
Vulnerability from cvelistv5
Published
2025-09-15 14:46
Modified
2025-09-15 14:46
Severity ?
Summary
In the Linux kernel, the following vulnerability has been resolved: firmware: dmi-sysfs: Fix null-ptr-deref in dmi_sysfs_register_handle KASAN reported a null-ptr-deref error: KASAN: null-ptr-deref in range [0x0000000000000008-0x000000000000000f] CPU: 0 PID: 1373 Comm: modprobe Hardware name: QEMU Standard PC (i440FX + PIIX, 1996) RIP: 0010:dmi_sysfs_entry_release ... Call Trace: <TASK> kobject_put dmi_sysfs_register_handle (drivers/firmware/dmi-sysfs.c:540) dmi_sysfs dmi_decode_table (drivers/firmware/dmi_scan.c:133) dmi_walk (drivers/firmware/dmi_scan.c:1115) dmi_sysfs_init (drivers/firmware/dmi-sysfs.c:149) dmi_sysfs do_one_initcall (init/main.c:1296) ... Kernel panic - not syncing: Fatal exception Kernel Offset: 0x4000000 from 0xffffffff81000000 ---[ end Kernel panic - not syncing: Fatal exception ]--- It is because previous patch added kobject_put() to release the memory which will call dmi_sysfs_entry_release() and list_del(). However, list_add_tail(entry->list) is called after the error block, so the list_head is uninitialized and cannot be deleted. Move error handling to after list_add_tail to fix this.
References
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/18e126e97c961f7a93823795c879d7c085fe5098
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/5d0492d1d934642bdfd2057acc1b56f4b57be465
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/b4fe158259fb5fead52ff2b55841ec5c39492604
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/e851996b32264e78a10863c2ac41a8689d7b9252
Impacted products
Vendor Product Version
Linux Linux Version: fdffa4ad8f6bf1ece877edfb807f2b2c729d8578
Version: 660ba678f9998aca6db74f2dd912fa5124f0fa31
Version: 660ba678f9998aca6db74f2dd912fa5124f0fa31
Version: 660ba678f9998aca6db74f2dd912fa5124f0fa31
Version: a9bfb37d6ba7c376b0d53337a4c5f5ff324bd725
Version: ed38d04342dfbe9e5aca745c8b5eb4188a74f0ef
Version: c66cc3c62870a27ea8f060a7e4c1ad8d26dd3f0d
Version: a724634b2a49f6ff0177a9e19a5a92fc1545e1b7
Version: 985706bd3bbeffc8737bc05965ca8d24837bc7db
Version: 3ba359ebe914ac3f8c6c832b28007c14c39d3766
Version: ec752973aa721ee281d5441e497364637c626c7b
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   Linux Linux Version: 5.19
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        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nfirmware: dmi-sysfs: Fix null-ptr-deref in dmi_sysfs_register_handle\n\nKASAN reported a null-ptr-deref error:\n\nKASAN: null-ptr-deref in range [0x0000000000000008-0x000000000000000f]\nCPU: 0 PID: 1373 Comm: modprobe\nHardware name: QEMU Standard PC (i440FX + PIIX, 1996)\nRIP: 0010:dmi_sysfs_entry_release\n...\nCall Trace:\n \u003cTASK\u003e\n kobject_put\n dmi_sysfs_register_handle (drivers/firmware/dmi-sysfs.c:540) dmi_sysfs\n dmi_decode_table (drivers/firmware/dmi_scan.c:133)\n dmi_walk (drivers/firmware/dmi_scan.c:1115)\n dmi_sysfs_init (drivers/firmware/dmi-sysfs.c:149) dmi_sysfs\n do_one_initcall (init/main.c:1296)\n ...\nKernel panic - not syncing: Fatal exception\nKernel Offset: 0x4000000 from 0xffffffff81000000\n---[ end Kernel panic - not syncing: Fatal exception ]---\n\nIt is because previous patch added kobject_put() to release the memory\nwhich will call  dmi_sysfs_entry_release() and list_del().\n\nHowever, list_add_tail(entry-\u003elist) is called after the error block,\nso the list_head is uninitialized and cannot be deleted.\n\nMove error handling to after list_add_tail to fix this."
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      "providerMetadata": {
        "dateUpdated": "2025-09-15T14:46:20.011Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
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        {
          "url": "https://git.kernel.org/stable/c/18e126e97c961f7a93823795c879d7c085fe5098"
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    "assignerShortName": "Linux",
    "cveId": "CVE-2023-53250",
    "datePublished": "2025-09-15T14:46:20.011Z",
    "dateReserved": "2025-09-15T14:19:21.849Z",
    "dateUpdated": "2025-09-15T14:46:20.011Z",
    "state": "PUBLISHED"
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  "vulnerability-lookup:meta": {
    "nvd": "{\"cve\":{\"id\":\"CVE-2023-53250\",\"sourceIdentifier\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"published\":\"2025-09-15T15:15:52.280\",\"lastModified\":\"2025-09-15T15:22:27.090\",\"vulnStatus\":\"Awaiting Analysis\",\"cveTags\":[],\"descriptions\":[{\"lang\":\"en\",\"value\":\"In the Linux kernel, the following vulnerability has been resolved:\\n\\nfirmware: dmi-sysfs: Fix null-ptr-deref in dmi_sysfs_register_handle\\n\\nKASAN reported a null-ptr-deref error:\\n\\nKASAN: null-ptr-deref in range [0x0000000000000008-0x000000000000000f]\\nCPU: 0 PID: 1373 Comm: modprobe\\nHardware name: QEMU Standard PC (i440FX + PIIX, 1996)\\nRIP: 0010:dmi_sysfs_entry_release\\n...\\nCall Trace:\\n \u003cTASK\u003e\\n kobject_put\\n dmi_sysfs_register_handle (drivers/firmware/dmi-sysfs.c:540) dmi_sysfs\\n dmi_decode_table (drivers/firmware/dmi_scan.c:133)\\n dmi_walk (drivers/firmware/dmi_scan.c:1115)\\n dmi_sysfs_init (drivers/firmware/dmi-sysfs.c:149) dmi_sysfs\\n do_one_initcall (init/main.c:1296)\\n ...\\nKernel panic - not syncing: Fatal exception\\nKernel Offset: 0x4000000 from 0xffffffff81000000\\n---[ end Kernel panic - not syncing: Fatal exception ]---\\n\\nIt is because previous patch added kobject_put() to release the memory\\nwhich will call  dmi_sysfs_entry_release() and list_del().\\n\\nHowever, list_add_tail(entry-\u003elist) is called after the error block,\\nso the list_head is uninitialized and cannot be deleted.\\n\\nMove error handling to after list_add_tail to fix this.\"}],\"metrics\":{},\"references\":[{\"url\":\"https://git.kernel.org/stable/c/18e126e97c961f7a93823795c879d7c085fe5098\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/5d0492d1d934642bdfd2057acc1b56f4b57be465\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/b4fe158259fb5fead52ff2b55841ec5c39492604\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/e851996b32264e78a10863c2ac41a8689d7b9252\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"}]}}"
  }
}


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